Vulcanizer.



PATENTED JULY 17, 19 06,

E '1). GILBERT. VULGANIZER.

APPLICATION FILED JAN. 23. 1905.

3 SHEETS-SHEET 1.

'FIG. 1.

JNVENZOR.

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W1 T/VESSES ATTORNEK' co, wasnmcrou, a. c.

PATENTED JULY 17, 1906.

E. D. GILBERT.

VULGANIZER.

APPLICATION FILED JAN. 23, 1905.

3 SHEETS-SHEET 2 III,

'I'IIIIIIIIIIIII'Iu'" ATTORNEK 1n: NORRIS Psnms co., WASHINGTON. o. c.

UNITED srA'rEs PATENT ensign.

EDMUND D. GILBERT, OF PHILADELPHIA, PENNSYLVANIA, Q ISSIGNOR TO THE S.S. WHITE DENTAL MAN UFACTURING COMPANY, OF PHILADEL- PHIA, PENNSYLVANIA.

VULCANIZEH.-

Specification of Letters Patent.

Patented July 17, 1906.

To (052 1011 0112, it may concern:

Be it known that I, EDMUND D. GILBERT, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inVulcanizers; and I do hereby declare the following to be a full, clear,andexact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to vulcanizers especially designed for the use ofdentists and others for vulcanizing rubber dental plates, &c., the objectof my invention being to improve and simplify the vulcanizer formingthe subject of my United States Letters Patent No. 614,246, datedNovember 15, 1898.

The present invention consists in certain improvements, hereinafterdescribed and claimed, in the means forsupporting, clamping andunclamping, and handling the lids or covers of vulcanizers.

In the accompanying drawings, illustrating an embodiment of theinvention, Figure 1 is a view in side elevation, showing the cover asclamped upon the boiler. Fig. 2 is a vertical-central sectional viewshowing the cover unclamped from the boiler and sus pended over thesame. Fig. 3 is a vertical central sectional view of the cover and itssupporting and operating mechanism with the parts in the same positionas represented in Fig. 2, but turned at a right angle thereto, thesection being taken on the line 3 3 of said Fig. 2. Fig. 4 is a top orplan View showing the cover and its supporting-yoke as swung to one sideof the boiler to expose the same.

As the invention relates only to the cover supporting and operatingmechanism, it will be unnecessary to describe in detail other featuresof the vulcanizer. In fact, I have even omitted from the drawings theusuallyemployed thermometer, blow-oil", &c., which form no part of myinvention.

In general the vulcanizer consists of a pot or boiler 1, asupporting-jacket 2, a lid or cover 3, and a supporting-yoke 4, to whichthe lid or cover is secured, the supportingyoke having connection with acollar 5, mounted upon the acket.

The cover-supporting yoke 4 is connected at one end to the collar 5 by avertical pivotbolt 6, whereby said yoke is capable of being swunghorizontally tobring the cover ditory to clamping the cover upon saidboiler.

The cover-supporting yoke is provided with a vertical central opening 9,best formed in an enlargement or hub, the lower portion of said opening'beingpreferably round .to receive a correspondingly-shapedstem 11,projecting centrally from the lid or cover 3. A rockshaft 12 is mountedcrosswise in the yoke across the opening 9 and near the upper endthereof, the rocli-shaftbeing'fol'me W an eccentric 13 inside theopening.

A rod 14 connects the eccentric 13 and the stem 11 of the'lid, thedetailsofthis connection preferably being as followszThe stem 11 isformed with upper andlower chambers 15 and 16, divided by acentrally-perforated partition 17. A threaded bolt 18 is pivoted to thelower end of the eccentric-rod 14 in the upper chamber 15 andpassesfthrough the perforation of the partition17 intothe lower chamber16. On the lower portion of the screw-bolt 18 is a nut 19, which bearsagainst the under side of the partition 17 The lower chamber 16 is openat one side 20 to give ac cess to the nut 19 for operating it.

The rock-shaft 12 at one end projects beyond the side of the yoke, andanoperatinglever 21 is made fast to said projecting end. For conveniencein assembling the parts the opposite end of the rock-shaft is reduced indiameter at 22 and is connected with a circu lar piece 23, havingbearing in the yoke. The upper open end of the yoke-opening may beclosed by a cap 24. The operating-lever is best provided with a wood orother suitable handle 25, and projecting from one side of theoperating-lever is a lug or pin 26, designed to limit the movement ofsaid lever in oppo site directions by coming in contact with the yoke. Iprefer to bend or curve the operating-lever, as shown, in order toreduce the radius or sweep of said lever when the same is swunghorizontally. It will be observed that the connection between the coverand the eccentric is located entirely within the yoke-opening, wherebyit is protected against log (siteam arising from the boiler and alsofrom irt.

The operation of my improved vulcanizercover supporting and handlingmechanism is as follows: WVhen the operating-lever is thrown downwithits stop-lug 26 resting upon the yoke, as shown in Fig. 2, the lid orcover is suspended over the boiler and the yoke and cover may be movedto one side of the boiler, as shown in Fig. 4. The boiler is now eX-posed, and a suitably-packed flask or flasks (not shown) may be placedtherein preparatory to the vulcanizing process. Then by means of theoperating-lever the yoke may be swung horizontally until its notch 7 engages the stop 8, when the cover is again suspended directly over theboiler, as shown in Fig. 2. The operating-lever is now moved upwardlyand forced past the center of the vulcanizer until its stop-lug 26 comesin con tact with the opposite side of the yoke, this position beingindicated in Fig. 1. This movement of the operating-lever forces thecover down tightly upon the boiler to close the same steam tight, itbeing understood that this is accomplished by means of the eccentric 13acting through the rod 14. After the vulcanizing process is completedand the vulcanizer properly cooled the operating-lever is pulledupwardly and moved to the opposite side of the yoke. (See Fig. 2.) Thismovement first breaks the connection between the cover and boiler andraises the cover until it clears the boilerfwhen it may swing ithorizontally in the proper direction until it'comes to a full stop, andthen pull it 5 up and over past the center as far as it will go. Thisinpractice is really but a single movel ment and may be performedquickly. In opening or uncovering the vulcanizer it is only necessary toreverse this simple movement.

Vertical adjustment of the cover independently of the operating-levermay be accomplished by turning the nut 19 on the screw-bolt 18. Theobject of this adjustment is to provide for taking up wear of thecover-packing and also for varying the extent of compression of thecover as the same may become necessary.

The improved mechanism is not only more easily and quickly operated thanthe vulcanizer shown in my before-mentioned pat ent, No. 614,246, but itis also more simple in construction and equally as eflicient and safe.

My present invention is not confined to the precise details ofconstruction shown and described, as these are susceptible of more orless modification Without departing from the spirit and scope of myinvention.

I claim as my invention 1. The combination, in a vulcanizer, of aboiler, a cover therefor, a cover-supporting yoke pivoted to swinghorizontally and having a vertical central opening, an eccentric in saidopening, a stem projecting from said cover and movable vertically insaid opening, and a link connection inside said opening between saideccentric and said stem, substantially as and for the purpose set forth.

2. The combination, in a vulcanizer, of a boiler, a cover therefor, acover-supporting yoke pivoted to swing horizontally and having avertical central opening, an eccentric in said opening, a stemprojecting from said cover and movable vertically in said opening, a rodpivoted to said eccentric, a bolt pivoted to said rod, and a nut on saidbolt having bearing in said stem, substantially as and for the purposeset forth.

In testimony whereof I affix my signature in presence of two witnesses.

EDMUND D. GILBERT.

I/Vitnesses:

CARRIE E. SHERTZ, EDWIN STEARNE.

